[PATCH] bluetooth: hci_event: don't print an error on vendor events

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Since commit 3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events"),
some devices see errors being printed for vendor events, e.g.

[   75.806141] Bluetooth: hci0: setting up wcn399x
[   75.948311] Bluetooth: hci0: unexpected event 0xff length: 14 > 0
[   75.955552] Bluetooth: hci0: QCA Product ID   :0x0000000a
[   75.961369] Bluetooth: hci0: QCA SOC Version  :0x40010214
[   75.967417] Bluetooth: hci0: QCA ROM Version  :0x00000201
[   75.973363] Bluetooth: hci0: QCA Patch Version:0x00000001
[   76.000289] Bluetooth: hci0: QCA controller version 0x02140201
[   76.006727] Bluetooth: hci0: QCA Downloading qca/crbtfw21.tlv
[   76.986850] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.013574] Bluetooth: hci0: QCA Downloading qca/oneplus6/crnv21.bin
[   77.024302] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.032681] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.040674] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.049251] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.057997] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.066320] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.075065] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.083073] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.091250] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.099417] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.110166] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.118672] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.127449] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.137190] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.146192] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.154242] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.163183] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.171202] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.179364] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.187259] Bluetooth: hci0: unexpected event 0xff length: 3 > 0
[   77.198451] Bluetooth: hci0: QCA setup on UART is completed

Use the quick-return path in hci_event_func() to avoid printing this
message for vendor events, this reverts to the previous behaviour which
didn't print an error for vendor events.

Fixes: 3e54c5890c87 ("Bluetooth: hci_event: Use of a function table to handle HCI events")
Signed-off-by: Caleb Connolly <caleb.connolly@xxxxxxxxxx>
---
 net/bluetooth/hci_event.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index fc30f4c03d29..56cc41ea9f31 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -6809,7 +6809,7 @@ static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb,
 	const struct hci_ev *ev = &hci_ev_table[event];
 	void *data;
 
-	if (!ev->func)
+	if (!ev->func || event == HCI_EV_VENDOR)
 		return;
 
 	if (skb->len < ev->min_len) {
-- 
2.35.1




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